response-test

#!/bin/bash

# Get the script directory
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"

trap cmd_fail 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

# Challenge phrase
CHALLENGE="The sun is shining... "

# Correct response hash
RESPONSE_HASH="bba672abfde9120d8cc000bb113ffb50"

# Command to execute on sucess
COMMAND_SUCCESS="exit 0"

# Command to execute on failure
COMMAND_FAILURE="$DIR/lolsh $PPID"

show_help()
{
	echo "Usage: $(basename $0) [-h] [-c challenge] [-m response-md5sum] [-s sucess-command] [-f fail-command]"
}

cmd_sucess()
{
	bash -c "$COMMAND_SUCESS"
}

cmd_fail()
{
	bash -c "$COMMAND_FAILURE"
}

hashify()
{
	md5hash="$(echo $@ | md5sum | awk -F ' ' '{print $1}')"
	echo "$md5hash"
}

# Get command line options to set the challenge and command
while getopts "hc:s:f:m:" opt; do
	case "$opt" in
		h)	show_help
			exit 0
			;;
		c)	CHALLENGE="$OPTARG"
			;;
		s)	COMMAND_SUCESS="$OPTARG"
			;;
		f)	COMMAND_FAILURE="$OPTARG"
			;;
		m)	RESPONSE_HASH="$OPTARG"
			;;
	esac
done

# Prompt the user to enter a test response
read -p "$CHALLENGE" t
md5hash="$(hashify $t)"
if [[ "$md5hash" == "$RESPONSE_HASH" ]]; then
	cmd_sucess
else
	cmd_fail
fi